If your destination is east of Village Center Drive (shown in blue), use Yorba Linda Boulevard/Weir Canyon Road from the Riverside Freeway to get to and from your destination. If your destination is west of Village Center, use Imperial Highway to the greatest extent possible to get to and from your destination.
Mouth ulcers are caused by many disorders. These include: 1  Canker sores. 2  Gingivostomatitis. 3  Herpes simplex (fever blister). 4  Leukoplakia. 5  Oral cancer. 6  Oral lichen planus.
Canker sores are the most common cause of mouth ulcers. They are 1 - 3 painful, white ulcers of inner cheeks, inner lip or gums (no fever). Causes include injuries from rough food, tooth brushes, biting, or food irritants.